Analysis

  • max time kernel
    108s
  • max time network
    115s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    21-05-2022 01:10

General

  • Target

    Rv Quotation_Request_Sheet.pdf.exe

  • Size

    654KB

  • MD5

    18eedad20bcf509f489bfca8831ab3bf

  • SHA1

    f3369a6864cf4f53376096c2faaebb8bda802126

  • SHA256

    b43942a6c8b89e2696abecd55fc787b54c53ae4fb89c7784b4c54cc5e99c30ef

  • SHA512

    10356dbc2ddc5b630142262e681792091eaae102c039eab67fbe707c429b6046a1e3bf12f92ebb2f22a5277a428e0a405b048ebafa735ff2ba909ff412d7299e

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    nnedimma080

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    nnedimma080

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla Payload 2 IoCs
  • Drops startup file 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Rv Quotation_Request_Sheet.pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Rv Quotation_Request_Sheet.pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1348
    • C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\system32\notepad.exe"
      2⤵
      • Drops startup file
      PID:4324
    • C:\Users\Admin\AppData\Local\Temp\Rv Quotation_Request_Sheet.pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Rv Quotation_Request_Sheet.pdf.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:4628

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1348-133-0x0000000000400000-0x00000000004AB000-memory.dmp
    Filesize

    684KB

  • memory/4324-130-0x0000000000000000-mapping.dmp
  • memory/4628-131-0x0000000000000000-mapping.dmp
  • memory/4628-132-0x00000000009E0000-0x0000000000A2C000-memory.dmp
    Filesize

    304KB

  • memory/4628-134-0x00000000009E0000-0x0000000000A2C000-memory.dmp
    Filesize

    304KB

  • memory/4628-135-0x0000000074CB0000-0x0000000075261000-memory.dmp
    Filesize

    5.7MB